<template>
  <div>
    <!-- 三级分类 -->
    <Category :scene="scene"></Category>
    <el-card style="margin: 10px 10px">
      <div v-show="scene == 0">
        <el-button
          type="primary"
          size="default"
          icon="Plus"
          :disabled="categoryStore.c3Id ? false : true"
          @click="addSpu"
          >添加SPU</el-button
        >
        <el-table border style="margin: 10px 10px" :data="records">
          <el-table-column
            label="序号"
            type="index"
            align="center"
            width="80px"
          ></el-table-column>
          <el-table-column label="SPU名称" prop="spuName"></el-table-column>
          <el-table-column
            label="SPU描述"
            prop="description"
            show-overflow-tooltip
          ></el-table-column>
          <el-table-column label="SPU操作">
            <!-- row:即为已有的SPU对象 -->
            <template #="{ row}">
              <el-button
                type="primary"
                size="small"
                icon="Plus"
                title="添加SKU"
                @click="addSku(row)"
              ></el-button>
              <el-button
                type="primary"
                size="small"
                icon="Edit"
                title="修改SPU"
                @click="updateSpu(row)"
              ></el-button>
              <el-button
                type="primary"
                size="small"
                icon="View"
                title="查看SKU列表"
                @click="findSku(row)"
              ></el-button>
              <el-popconfirm
                :title="`你确定删除${row.spuName}?`"
                width="200px"
                @confirm="deleteSpu(row)"
              >
                <template #reference>
                  <el-button
                    type="primary"
                    size="small"
                    icon="Delete"
                    title="删除SPU"
                  ></el-button>
                </template>
              </el-popconfirm>
            </template>
          </el-table-column>
        </el-table>
        <!-- 分页器 -->
        <el-pagination
          v-model:current-page="pageNo"
          v-model:page-size="pageSize"
          :page-sizes="[3, 5, 7, 9]"
          :background="true"
          layout=" prev, pager, next, jumper,->, sizes,total"
          :total="total"
          @current-change="getHasSpu"
          @size-change="changeSize"
        />
      </div>

      <spuFrom
        ref="spu"
        v-show="scene == 1"
        @changeScene="changeScene"
      ></spuFrom>
      <skuFrom ref="sku" v-show="scene == 2"></skuFrom>
    </el-card>

    <!-- dialog对话框:展示已有的SKU数据 -->
    <el-dialog v-model="show" title="SKU列表">
      <el-table border :data="skuArr">
        <el-table-column label="SKU名字" prop="skuName"></el-table-column>
        <el-table-column label="SKU价格" prop="price"></el-table-column>
        <el-table-column label="SKU重量" prop="weight"></el-table-column>
        <el-table-column label="SKU图片">
          <template #="{ row}">
            <img :src="row.skuDefaultImg" style="width: 100px; height: 100px" />
          </template>
        </el-table-column>
      </el-table>
    </el-dialog>
  </div>
</template>
  
  
  <script setup lang="ts">
import { ref, watch, onBeforeUnmount } from "vue";
import type {
  Records,
  HasSpuResponseData,
  SpuData,
  SkuInfoData,
  SkuData,
} from "@/api/product/spu/type";
import useCategoryStore from "@/store/modules/Category";

import { ElMessage } from "element-plus";

import { reqHasSpu, reqSkuList, reqRemoveSpu } from "@/api/product/spu/index";
const categoryStore = useCategoryStore();

import spuFrom from "./spuFrom.vue";
import skuFrom from "./skuFrom.vue";

//场景的数据
let scene = ref<number>(0);
//分页器默认页码
let pageNo = ref<number>(1);
//每一页展示几条数据
let pageSize = ref<number>(3);

// 分页总数
let total = ref<number>(0);

// 列表数据
let records = ref<Records>([]);

// 获取子组件spuform实例
let spu = ref<any>();
let sku = ref<any>();

//监听三级分类ID变化
watch(
  () => categoryStore.c3Id,
  () => {
    //当三级分类发生变化的时候清空对应的数据
    records.value = [];
    //务必保证有三级分类ID
    if (!categoryStore.c3Id) return;
    getHasSpu();
  }
);

onBeforeUnmount(() => {
  //清空仓库的数据
  categoryStore.$reset();
});

//此方法执行:可以获取某一个三级分类下全部的已有的SPU
const getHasSpu = async (pager = 1) => {
  //修改当前页码
  pageNo.value = pager;
  let result: HasSpuResponseData = await reqHasSpu(
    pageNo.value,
    pageSize.value,
    categoryStore.c3Id
  );
  if (result.code == 200) {
    records.value = result.data.records;
    total.value = result.data.total;
  }
};
//分页器下拉菜单发生变化的时候触发
const changeSize = () => {
  getHasSpu();
};

//添加新的SPU按钮的回调
const addSpu = () => {
  //切换为场景1:添加与修改已有SPU结构->SpuForm
  scene.value = 1;
  spu.value.initAddSpu();
};

//修改已有的SPU的按钮的回调
const updateSpu = (row: SpuData) => {
  //切换为场景1:添加与修改已有SPU结构->SpuForm
  scene.value = 1;

  spu.value.initHasSpuData(row);
};

// 子组件supform绑定的自定义事件：目的是让子组件通知父组件将场景值切换为0
const changeScene = (obj: any) => {
  //子组件Spuform点击取消变为场景0:展示已有的SPU
  scene.value = obj.flag;
  if (obj.params == "update") {
    //更新留在当前页
    getHasSpu(pageNo.value);
  } else {
    //添加留在第一页
    getHasSpu();
  }
};

//添加SKU按钮的回调
const addSku = (row: SpuData) => {
  //点击添加SKU按钮切换场景为2
  scene.value = 2;
  //调用子组件的方法初始化添加SKU的数据
  sku.value.initSkuData(categoryStore.c1Id, categoryStore.c2Id, row);
};

//存储全部的SKU数据
let skuArr = ref<SkuData[]>([]);
let show = ref<boolean>(false);

//查看SKU列表的数据
const findSku = async (row: SpuData) => {
  let result: SkuInfoData = await reqSkuList(row.id as number);
  if (result.code == 200) {
    skuArr.value = result.data;
    //对话框显示出来
    show.value = true;
  }
};

//删除已有的SPU按钮的回调
const deleteSpu = async (row: SpuData) => {
  let result: any = await reqRemoveSpu(row.id as number);
  if (result.code == 200) {
    ElMessage({
      type: "success",
      message: "删除成功",
    });
    //获取剩余SPU数据
    getHasSpu(records.value.length > 1 ? pageNo.value : pageNo.value - 1);
  } else {
    ElMessage({
      type: "error",
      message: "删除失败",
    });
  }
};
</script>
  
  
  <style lang="scss" scoped></style>